Mikro Ark oksidasyon işlemi ile kaplanan Ti6Al4V alaşımının yüzey karakterizasyonu ve korozyon özelliklerinin incelenmesi

Titanyum ve alaşımları üstün mekanik özelliklerinden dolayı birçok sektörde tercih edilmekte olup, son yıllarda medikal uygulamalarda daha sık karşımıza çıkmaktadır. Bu çalışmada, kaplama öncesinde yüzeyleri zımparalanmış, parlatılmış Ti6Al4V alaşımları kullanılmıştır. Sabit kaplama çözeltisi ile faklı sürelerde kaplanmış numunelerin, oksit tabakasının kalınlığı, yüzey pürüzlülüğü değerleri araştırılmıştır. Kaplanan numuneler, NaOH çözeltisi içinde korozyon testine maruz bırakılmıştır. Kaplanan yüzeylere taramalı elektron mikroskobu (SEM) ve EDS analizi yapılmıştır. Artan süre ile kaplama tabakası kalınlığının ve yüzey pürüzlülüğünün arttığı tespit edilmiştir. Sonuçlar üretilen numunelerin korozyon dayanımında artış olduğunu göstermiştir.

Surface characterization and corrosion properties of coated Ti6Al4V alloy by micro arc oxidation

Titanium and its alloys are materials most commonly used for several sector especially medical application owing to some of their mechanical properties. In this study, Ti6Al4V were used as coating substrates. The influence of the different coating time was detailed (coating thickness, roughness) in this article. Coated samples were immersed to a corrosion resistance in NaOH solution. The MAO coatings were characterized by scanning electron microscope (SEM) and EDS analysis. The result indicate that with increasing the coating time increase the thickness and surface roughness. The results have indicated that the samples have good corrosion properties.

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